Re: [Boost-users] Boost.Serialization and size of archive

Ioannis Papadopoulos wrote:

Hi,

Is there any means of obtaining how big my archive will be before actually serializing? Something like a special boost::archive that will count the size of what I'm serializing. I'm mainly concerned on allocating exactly the space I'll be needing for binary_oarchives.

I guess I should follow the SA concept (since I'm trying to find the size before saving) but how can I know any extra overhead?

You could probably use boost.iostream library to create a sink that increments a size but doesnt' actually 'write' anything, then pass that to the oarchive's constructor. Be sure to use the same oarchive type that you will actually write to later. Jeff